CA2080282C - Seat hinge and latch assembly with bi-directional release - Google Patents
Seat hinge and latch assembly with bi-directional releaseInfo
- Publication number
- CA2080282C CA2080282C CA002080282A CA2080282A CA2080282C CA 2080282 C CA2080282 C CA 2080282C CA 002080282 A CA002080282 A CA 002080282A CA 2080282 A CA2080282 A CA 2080282A CA 2080282 C CA2080282 C CA 2080282C
- Authority
- CA
- Canada
- Prior art keywords
- assembly
- seat
- cable
- cushion assembly
- seat back
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/20—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being tiltable, e.g. to permit easy access
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/30—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats
- B60N2/3038—Cushion movements
- B60N2/304—Cushion movements by rotation only
- B60N2/3045—Cushion movements by rotation only about transversal axis
- B60N2/305—Cushion movements by rotation only about transversal axis the cushion being hinged on the vehicle frame
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
A vehicle seat comprising, a seat cushion, a seatback having connecting means to pivotally hold the top of the seatback from receding, a seat hinge and latch assembly located at each side of the seat cushion for locking the seat cushion into a seating position and lockably folding the seat cushion into a storage position against the seatback cushion, and a seat latch release, the seat hinge and latch assembly having a first bracket for mounting in a fixed position relative to a vehicle, a second bracket pivotally mounted to the first bracket for rotation between seating and storage positions, said second bracket including a mounting portion positioned to pivotally hold the seatback cushion for coordinated displacement with the seat cushion such that the lower portion of the seatback cushion recedes when the seat cushion is rotated into the storage position, and latch means including detent means corresponding to said seating and storage positions and a pawl for lockable engagement with said detent means.
Description
TITLE OF INVENTION
Seat Hinge and Latch Assembly with Bi-directional Release FIELD OF INVENTION
This invention relates to a latch assembly and a release 5 merh~ni~cm therefore and finds particular application in automotive vehicles and specifically in folding seats for trucks to allow more cargo space.
BACKGROUND OF ~HE INVENTION
It is known in the prior art to provide a pivoting seat, which 10 pivots and locks with respect to a seat back. An ~mple of such a seat is United states Patent 4,793,649. As best seen in relation to Figure 2 the assembly requires supplement~ry pawl and detente members 28a and 30 which complic~te the structure. It would be advantageous if the l~tching positions were defined with the mounting bracket and the pawl mounted 15 with the seat bracket to simplify the ~csçmhly. Further the seat back and the seat are ~tt~che~ to the ~.csemhly with separte brackets and therefore there is no provision for the interrelationship of the movements thereof.
It is also know to provide a release for seats, hootil~tches, trunks or the like which operates by tllrning a handle in a predete~ lled 20 direction. For seats specifically it would be advantageous to operate the release handle in either direction to release and move the seat.
Known latch structures and speciflcally the pawls thereof wear in time and therefore introduce rattles and other unpleasant noises into the operation thereof over time. There therefore exists a need to 2 5 provide a latching member with a wear resistant design which compenc~tes for the many cycles thereof by wearing in a predetermined m~nnçr so as to ensure cooperation of the parts through the extended life thereof.
Nowhere in the prior art is there found a simplifled latch 30 assembly which reduces the number of parts for a pivoting seat without sacriflcing rçli~hility. It would be therefore cost effective and emcient if a a latch were available which includes detentes defined with the mounting bracket. Further the latch may be engageable by a pawl having a predetermined geometry along with the detente to compensate for cycled wear. Finally it is needed and b-on~fici~l to provide the assembly 5 with a bi-directional release to simplify operation of seat assemhlies.
It is therefore a primary ob~ect of the invention to provide a latch for a seat which ~eimplihes the number of com~ollents thereof.
It is yet a further ob~ect of the invention to provide a pawl and detente for a latch which compensates for the wear over time and 10 reduces the amount of freeplay which is introduced into a latch as the latch wears.
It is yet a further ob3ect of the invention to provide a bi-directional actuator for rele~qing a remote mech~ni.qm therefore.
Further and other ob~ects of this invention will become 15 apparent to a man skilled in the art when considering the following sllmm~ry of the invention and the more detailed description of the ~refelled embo-lim~nt.c illustrated herein.
SUMMARY OF THE INVENTION
The invention is also directed to a vehicle seat hinge and 20 latch ~.qsemhly adapted for locking a seat cll.qhion in a seating position and lockably folding said seat cll~chion into a storage position against the se~th~ cllehion, the seat and latch assemply, comprising:
a flrst bracket for mounting in a fixed position relative to the vehicle, preferably to the vehicle floor, the floor stanchion or the movable 2 5 rail of a seat rail ~.qsemhly;
a second bracket for ~tt~chment to a vehicle seat cushion and pivotally mounted to the first bracket for rotation between seating and storage positions, said second bracket preferably including a mounting portion positioned for pivotally holding the seat back for coordinated 30 displacement with the seat cushion such that at least the lower portion of the seat back cushion recedes when the seat cushion is rotated into the storage position, thus serving to increase seat folding range and/or reduce seat cushion compression, ~iefelably the mounting portion is positioned to displace the seat cushion a predetermined distance 5 towards the vehicle floor before the seat cushion is locked in the storage position;
latch means, including detente means corresponding to preferably said seating and storage positions and a pawl for lockable engagement with the detente means and preferably biasing means for 10 urging said pawl towards a latched position, the pawl ~-ere-ably pivotally mounted to said second bracket about a predetermined pivot point for coor-lin~te-l rotation therewith and more ~-efel~bly planar shaped and coplanar with said detente means, said detente means preferably u-shaped and having arcuately shaped side walls and preferably also a 15 bottom wall, the detente sidewalls are preferably two continuous walls ad~acent the bottom wall and are each shaped according a pattern deflned by an arc of a circle which has a radius of dlrrere--t length and a dlrrelellt center, both centers ~efe ably offset a predete..l.lned distance from the predele..-~ ed pivot point, the pawl, having a mounting portion 20 for pivotally mountlng the pawl with respect to said predetel.,.llled pivot point and a u-shaped tooth portion which has a front wall and arcuately shaped side walls corresponding to the detente sidewalls, that taper toward the front wall, the u-shaped tooth portion preferably (lim.on~sioned so that at least a portion of the pawl tooth sidewalls engage 2 5 the corresponding detente sidewalls, the pawl tooth sidewalls being shaped according to a pattern deflned by arcs of circles having ~rere.tlbly opposite radii len~h~ relative to the lengths deflning the shape of the corresponding detente side walls and preferably the same centers as those defining the shape of the corresponding detente walls, the radii 30 lengths used to deflne the shape of the pawl tooth sidewalls being subst~nti~lly the same and preferably identical to the radii lengths used to deflne the shape of the opposite detente sidewalls, the centers used to define the arc shapes of the pawl tooth and detente sidewalls ~refelably both off-center from to the pivot poin$ of the pawl, the tooth portion 5 preferably angularly positioned relative to the mounting portion and rlimen~q~oned to permit the sidewalls of the tooth portion to be held by the neck of the u-shaped detente means such that the le~rling edge of the tooth portion is displaced from the bottom wall of the detente means;
and prere.ably lateral st~hili7.er means preferably in the form of a plate 10 pivotally moun~ed to said first bracket, more preferably coor-lin~tely mounted with sald second bracket for rotation therewith, more preferably mounted on the same pivot as said second bracket and more preferably mounted over said pawl to sanwidch the pawl to its travel path, According to another aspect of the invention we provide a bi-directional actuator including pl~efe~ably an interconnecting means of predetermined length which is preferably in the form of a cable, for connecting said bi-directional ~ctll~tor to a remote mech~nlc~l device, for mple a pawl, and l.lererably operating means, preferably in the form 20 of handle meansj for operating said bi-directional actuator, said bi-directional actuator inclll~ling ~n~glng means for operatively ~ng~ing a first portion of the ll.teLconnecting means remote from the latch pawl mounting means for mounting said çng~ng means to a support means in ~ro~ lly to said flrst portion of the interconnecting means, ~,ere,ably 25 its own support means and p~ere-ably biasing means for biasing said eng~ng means into an inoperative position, said ~n~ing me~n.~, when mounted, movable bi-directionally by the operating means from the inoperative position in which the interconnecting means is aligned in a predetermined path between the actuator and the pawl, to at least two 30 operative positions in which the engaging means deflects the ~ 5~ 2080282 interconnecting means along an alternative path such that the end of the interconnecting means attached to the latch pawl is displaced a predetermined distance towards the actuator, preferably the eng~p~ing means is movable in opposite directions relative to said inoperative 5 position to at least two respective operating positions, and more preferably the eng~ng means includes lever means pivotally mountable for rotation between said inoperative and operative positions and contact means for eng~ng said interconnecting means, said contact means preferably including a pulley wheel mounted for rotation on the lever 10 means, said lever means capable of exerting a preferably tangential deflecting force across said predetermined path against said interconnecting means when rotated into said operative positions, said lever means preferably lnc~ lng a iirst lever member pivotally mounted to sald support means in a flrst pivot position, a second lever member 15 e~endlng from said first lever member towards said predetermined path and linked to said first lever member for articulation therewith, and directing means to cause said second lever member to rotate in the same direction as said first lever member so as to extend the arc of rotation through which said lever means is capable of exerting a displ~ ng force 20 against the interconnecting means, said second lever member is preferably pivotally mounted to said support means in a second offset pivot position, said second pivot position proximal to said predetermined path relative to said flrst pivot position and preferably positioned between said flrst pivot position and the point of articulation between said first 25 and second lever members, said first lever member more preferably slidably linked to said second lever member such that the lever means can occupy an angular configuration in which the distance between the flrst pivot position and the contact means is shortened, said directing means preferably including a pivot arm ~ten~ling from one of said first 30 and second levers members and longitudally positioned guide means , . .
located on the other of said lever arms for slidably receiving said pivot arm, said pivot arm preferably positioned to articulate with said guide means along the length thereof and preferably mounted on said first lever member, ~lerelably said guide means is a longitudinal slot located said second lever member and said pivot arm exerts a preferably tangential deflecting force on either side of said slot to rotate the second lever member in the direction of rotation of said flrst lever member, said guide means also preferably including stop means for deflning the angle of rotation of second lever means, ~refel~bly the support means includes mounting means for operatively ~ligning said interconnecting means along said predeLelmllled path, preferably the mounting means includes a connector which fixes the position of the end of the interconnecting means remote from the pawl to deflne an end point of the predermined path and a guide for aligning said another portion of said interconnecting means in said predetermined path, preferably the connector and first guide means define a predetermined path which lies in the plane of rotation of said contact means and said contact means is pocit~one~l to engage said predeterminedportion of the interconnecting means at a point between said connector and guide.
The invention is also directed to a pawl adapted for engagement with a subst~nti~lly u-shaped detente means, said detente means having arcuately ~sh~re-l side walls and preferably a bottom wall, the detente sidewalls are preferably two continuous walls ad~acent the bottom wall and are shaped according a pattern deflned by arcs of circles which correspond to radii of dlrrerellt lengths and different centers, the pawl, ~referably planar shaped, having a mounting portion for pivotally mounting the pawl with respect to a predelelmlned pivot point and a u-shaped tooth portlon which has a front wall and arcuately shaped side walls colle~onding to the detente sidewalls that converge toward the front wall, the u-shaped tooth portion preferably dimensioned so that at 20~0282 least a portion of the pawl sidewalls ~lerel~bly engage the corresponding detente sidewalls, the pawl sidewalls being shaped according to a pattern defined by arcs of circles having preferably opposite radii lengths relative to the lengths defining the shape of the corresponding detente side walls 5 and preferably the same centers as those d~fining the shape of the corresponding detente walls, the radii lengths used to deflne the shape of the pawl sidewalls being subst~nti~lly the same and preferably identical to the radii lengths used to define the shape of the opposlte detente sidewalls, the centers used to define the arc shapes the pawl and detente 10 sidewalls prerelably both off-center from the pivot point of pawl, the tooth portion more preferably angularly positioned relative to the mounting portion and ~limen.cioned to permit the sidewalls of the tooth portion to be held by the neck of the u-shaped detente means such that the le~ ng edge of the tooth portion is displaced from the bottom wall of 15 the detente means.
According to one aspect of the invention we provide a vehicle seat hinge and latch assembly operable by at least one remote seat latch release and adapted for locking a seat cushion of a seat in a seating position and lockably folding said seat cushion into a storage position 20 against the seat-back cuchinn. comprising:
a first bracket for mounting in a fixed position relative to the vehicle, ~rere.~bly to the vehicle floor, the floor st~nchion or the movable rail of a seat rail ~.csemhly;
a second bracket for ~tt~hment to a vehicle seat cushion and 25 pivotally mounted to the flrst bracket for rotation between seating and storage posltlonc, said second bracket ~refel~bly including a mounting portion positioned for pivotally holding the seat back for coordinated displ~ment with the seat cushion such that at least the lower portion of the seat back cushion recedes when the seat cushion is rotated into the 30 storage position so as to increase seat folding range and/or reduce seat - 8- 20~0282 cushion compression, preferably the mounting portion is positioned to displace the seat cushion a predetermined distance towards the vehicle floor before the seat cushion is locked in the storage position;
latch means including detente means corresponding to said 5 seating and storage positions and a pawl for lockable engagement with the detente means and preferably biasing means for urging said pawl towards a latched position, the pawl ~lere ably pivotally mounted to said second bracket for coordinated rotation therewith and more ~refelably planar shaped and coplanar with said detente means, said detente means 10 preferably u-shaped and having arcuately shaped side walls and preferably a bottom wall, the detente sidewalls are ~rererably two continuous walls ad~acent the bottom wall and are shaped according a pattern deflned by arcs of circles which correspond to radii of different lengths and dlrreiellt centers, the pawl, preferably planar shaped, and having a 15 mounting portion for pivotally mounting the pawl with respect to a predetermined pivot point and a preferably u-shaped tooth portion which has a front wall and arcuately shaped side walls corresponding to the detente sidewalls that converge toward the front wall, the ~rererably u-shaped tooth portion ~,ererably ~lim~n.cione~ so that at least a portion 20 of the pawl sidewalls engage the colles~onding detente sidewalls, the pawl sidewalls being shaped according to a pattern defined by arcs of circles having E,rererably opposite radii lengths relative to the lengths deflning the shape of the corresponding detente side walls and ~r~rerably the same centers as those deflnin~ the shape of the corresponding 25 detente walls, the radii lengths used to deflne the shape of the pawl sidewalls being sl~hs~nti~lly the same and preferably identical to the radii lengths used to deflne the shape of the opposite detente sidewalls, the centers used to deflne the arc shapes of the pawl and detente sidewalls preferably both off-center from the pivot point of pawl, the tooth portion 30 more preferably angularly positioned relative to the mounting portion and ~imen.cjQned to permit the sidewalls of the tooth portion to be held by the neck of the u-shaped detente means such that the le~rling edge of the tooth portion is displaced from the bottom wall of the detente means:
remote latch release means including preferably at least one 5 bi-directional ~ctll~tor for releasing said pawl, an interconnecting means of predetermined length, preferably in the form of a cable, for connecting said bi-directional actuator to said pawl, and preferably operating means, more preferably in the form of handle means, for operating said bi-directional actuator, said bi-directional actuator including en ~ging 10 means for operatively engPging a predetermined portion of the interconnecting means remote from the latch pawl, mounting means for mounting said ~ng~lng means to a support means in ~-o~lllllly to said predetermined portion of the interconnecting means, preferably a support means and ~-efel~bly b~ ng means for bi~ing said eng~ging 15 means into an inoperative position, said engP~ing means, when mounted, movable bi-directionally by the operating means from the inoperati~e position in which the interconnecting means is aligned in a predetermined path between the ~-~tll~tor and the pawl, to at least two operative positions in which the engPging means deflects the 20 interconnecting means along an alternative path such that the end of the interconnecting means attached to the latch pawl is displaced a predeLe.mll.ed distance towards the ~cl.~to., preferably said alternative directions are opposite one another relative to said inoperative position and more ~Lefe-~bly the engP~ng means includes lever means pivotally 25 mountable for rotation between said inoperative and operative positions and contact means for ~ngP~ng said intelcollllecting means, said contact means ~reÇelably including a pulley wheel mounted for rotation on the lever means, said lever means c~p~hle of exerting a tangential deflecting force across said predetermined path said interconnecting means when 30 rotated into said operative positions, said lever means preferably including a first lever member pivotally mounted to said support means in a first pivot position, a second lever member ~xt~n-lin~ from said first lever member towards said predetermined path and linked to said first lever member for artic~ tlon therewith and directing means to cause 5 said second lever member to rotate in the same direction as said first lever member so as to extend the arc of rotation through which said lever means is capable of exerting a displacing force against the interconnecting means, said second lever member is ~refelably pivotally mounted to said support means in a second offset pivot position, said 10 second pivot position ~lox~ al to said predetermined path relative to said first pivot position and preferably positione-1 between said first pivot position and the point of artlcul~tlon between said first and second lever members, said first lever member more ~lerel~bly slidably linl~ed to said second lever member such that the lever means can occupy an angular 15 configuration in which the .1l~et~nce bet~,veen the first pivot position and the contact means i9 shortened, said directing means preferably including a pivot arm çxt~n-l1ng from one of said first and second levers members and lo~tl~ lly po~qltionefi guide means located on the other of said lever arms for slidably receiving said pivot arm, said pivot arm 20 preferably po~qitione-l to articulate with said guide means along the length thereof and preferably mounted on said first lever member, ~refelably said guide means is a lon~tlldinal slot located said second lever member and said pivot arm exerts a preferably tangential deflecting force on either side of said slot to rotate the second lever member in the 25 direction of rotation of said flrst lever member, said guide means also ,rererably including stop means for dçfining the angle of rotation of second lever means, preferably the support means includes holding means for operatively ~ ning said portion of the interconnecting means along said predetermined path, ~rerelably the mounting means includes 30 a connector which fixes the position of the end of the interconnecting means remote from the pawl to define an end point of the predermined path and a guide for ~ligning said predetermined portion of said interconnecting means in said predetermined path, preferably the connector and guide define a predetermined path which lies in the plane of rotation of said contact means and said contact means is positioned to engage said predetermined portion of the interconnecting means at a point between said connector and guide;
and preferably lateral st~hili~er means preferably in the form of a plate pivotally mounted to said first bracket, more preferably coorrl~n~tçly mounted with said second bracket for rotation therewith, more ~referably mounted on the same pivot as said second bracket and more preferably mounted over said pawl to sandwich the pawl to its travel path.
The invention is particularly directed to a vehicle seat hinge and latch assembly adapted for locking a seat cushion of a seat into a seating position and lockably fol~1in~ said seat cushion into a storage position ~in.~t the seat back cushion of said seat, said seat hinge and latch assembly comprising:
a first bracket for mounting in a fixed position relative to the vehicle;
a second bracket for ~tt~chment to a vehicle seat cll.chion, said second bracket pivotally mounted to the flrst bracket for rotation between operative and storage position.~; and latch means including detent means corresponding to the seating and storage positions and a pawl for lockable engagement with the detente means, said pawl mounted to said second bracket for coor-lin~ted rotation therewith such that the pawl lockably engages the respective detente means when the seat is rotated into a seating and storage position.
The invention is also particularly directed to a vehicle seat hinge and latch assembly adapted for locking a seat cushion of a seat into a seating position and lockably folding said seat cushion into a storage position against the seat back cushion of the seat, said seat hinge and latch assembly colllplisillg:
a first bracket for mounting in a fixed position relative to a vehicle;
a second bracket pi~otally mounted to the first bracket for rotation between seating and storage positions, said second bracket including a mounting portion positioned to pivotally hold the seat back cushion for coordinated displ~c~m~nt with the seat cushion such that at least the lower portion of the seat back cll.qhion recedes when the seat cushion is rotated into the storage po.sition; and latch means including detente means corresponding to said se~t~ng and storage positions and a pawl for lockable engagement with said detente means.
The lnvention is also particularly directed to a vehicle seat hinge and latch assembly adapted for locking a seat cllchiorl of a seat into a se~t1ng position and lockably fol-ling said seat cushion into a storage position against the seat back cushion of the seat, said seat hinge and latch ~.qs~mhly coll-l, lslllg:
a flrst bracket for mounting in a flxed position relative to a vehicle:
a second bracket pivotally mounted to the flrst bracket for rotation between seating and storage positions, said second bracket including a mounting portion for use in con~unction with independent connecting means which pivotally hold the top of the seat back from receding, the mounting portion positioned to pivotally hold the seat back cushion for coordin~te-l displacement with the seat cushion such that the lower portion of the seat back cushion recedes when the seat cushion is rotated into the storage position; and latch means including detente means corresponding to said seating and storage positions and a pawl for lockable engagement with said detente means.
The invention is also particularly directed to a bi-directional 5 actuator for operating at least one remote mechanical device using an interconnecting means of predetermined length, comprising:
eng~ging means for operatively eng~ging a predetermined portion of the interconnecting means remote from the mechanical device; and a mounting means for mounting said eng~ing means to a support means in yro~lllity to said predetermined portion of the interconnecting means;
said engaging means, when mounted, movable bi-directionally, by an operating me~nc~ from an inoperative position in 15 which the interconnecting means is aligned in a predetermined path between the ~ctll~tor and the me~.h~nic~l device, to at least one operative position in which the eng~gln~ means deflects the predetermined portion of the interconnecting means along an alternate path such that the end of the in~ercollnecting means yi~lmal to the mechanical device 20 is displaced a predetermined distance towards the bi-directional 2 r~h l~t~r.
The invention is also particularly directed to a vehicle seat comrrlRing a seat cllchion, a seat back cllchion mounted to the vehicle, a seat hinge and latch assembly located at each side of the 25 seat cushion for locking the seat cushion into a seating position and lockably folding the seat cllRhion into a storage position against the seat back cll.chion, and a seat latch release, the seat hinge and latch assembly having a first bracket for mounting in a fixed position relative to the vehicle, a second bracket for ~tt~.hm~nt to a vehicle seat cushion, said 30 second bracket pivotally mounted to said first bracket for rotation - 14- 2~
between seating and storage positions, and latch means including detente means col-c:~onding to the seating and storage positions and a pawl for lockable engagement with the detente means, said detente means carried by said first bracket.
This invention is also particularly directed to a vehicle seat hinge and latch ~.cs~mhly adapted for locking a seat cushion of a seat into a seating position and lockably folding said seat cushion into a storage position against the seat back cushion of the seat, said seat hinge and latch assembly colllpllsll,g:
a flrst bracket for mounting in a fixed position relative to the vehicle;
a second bracket for ~tt~hmçnt to a vehicle seat cll.chion, said second bracket pivotally mounted to said first bracket for rotation between seattng and storage position.c; and latch means including detente means correspo~(lin~ to the seating and storage positions and a pawl for lockable engagement with said detente me~n.q, said detente means carried by said first bracket.
BRIEF DEscRI~rIoN OF THE DRAWINGS
The invention will now be illustrated with respect to the followlng drawings illustrating embo-limçnt~ of the invention in which:
Figure 1 is a sçhçm~tic representation of a truck having a folding rear seat which folds from an operative position into a storage posltion and illustrated in a ~refclled embodiment of the invention.
Figure lA and lB are a schematic views illustrating alternative embodiments of the invention.
Figure 2 is an exploded perspective view of a a seat hinge and latch assembly illustrated in a preferred embodiment of the invention.
Figure 2A and 2B are side view of the seat of Figure 1 illustrated in a ~lcre-lcd embodiment of the invention.
Figure 3 is a front elevation of the seat hinge and latch assembly of Figures 2A and 2B illustrating the latch pawl positions for locking the seat in an operative position.
Figure 4 and 4A are a close-up schem~tic views of the latch 5 pawl of Figure 3 illustrating the design of the wear char~ct~ri.etics of the pawl and detente.
Figure 5 is a front elevation of the seat hinge and latch assembly of Figure 1 illustrating the assembly bolted to a vehicle floor and the motion of the second arm and the latch pawl when rotated into 10 the storage po.si~ion.
Figure 6 is a perspective view of a bi-directional actuator illustrated according to a ~e~l.ed embo-liment of the invention.
Figure 7 is a side elevation of the bi-directional actuator of Flgure 6 shown in cross-section along the line 2-2 in Figure 6.
Figure 8 is a schem~tic view of the ~n~ing portions of the ~ct1l~tor of Figure 6 shown in the inoperative and operative positions illustrating bi-directional actions thereof and illustrated in a ~rerel.ed embo-llment of the invention.
Figure 9 is a diagr~mm~tic representation the eng~ng 20 portions of Figure 6 illustrating the artic~ tion of the first and second members of the levers to increase the arc of rotation of the eng~gine means.
Figure 10 is a schem~tlc view of a seat cont~1nine many embo-llment.~ of the invention.
INVENTION
Referring now to Figure 1 there is illustrated a pickup truck 70 which has a drivers seat S2 and seatback B2 installed in the cab thereof. Behind the seat is disposed a folding seat 74 which folds to and 30 from operative and stored positions. A latch and hinge assembly 80 is therefore provided which is fastened to the floor F by a bracket 92 as best seen in Figure 2. The bracket 92 has detente positions described therewith to latch a rele~.e~hle pawl 86 with respect thereto. The pawl 86 is affixed to a seat bracket 84 which is fixed to the seat 74 at 130 and 134 and pivotally to the se~th~ck 72 at 132 to provide for motion of the bottom end of the se~th~ck as illustrated in Figure 2A and 2B. The top of the seatback 72 is held in position by a clip C which engages a yoke Y and retains the seatback in position ~lox~ te the top thereof while the bottom moves rearwardly to allow for space for the folding of the seat 74.
The pawl 86 is remotely rele~.e~hle from the detente of the seat (as best seen in Figure 10) allowing motion of the seat 74.
As shown in Figure lA, a seat hinge and latch assembly 80"
according to an alternative embo-lim~nt of the invention is provided to control the motion of the seat cushion 74" of a rear seat 78" of van 70"
to increase the storage space at the rear of the van. This is accompli~hed by rotating the seat cushion 74" from the operative position thereof to the folded position thereof ~in~st the seat back 72" as described above.
Refering now to Figure lB there is illustrated in an alternative embo-liment of the invention the seat 74' and sç~th~ck 72' defining a seat assembly S3 wherein the seat 74' moves independent of the seatback 72' and folds ad~acent the back 72' by the l~tching and pivoting assembly 80'.
The seat 74' is affixed to the seat bracket 84". The pawl 86' is rele~.q~hle with the detentes of mounting bracket 92'. There is no cooperative motion of the se~th~ck 72" in this embo-1iment Referring now to Figures 2, 3 and 5 the seat hinge and latch assembly 80 includes the mounting bracket 82 for mounting to the vehicle for ~tt~chment to the seat bracket 84 by a pivot pin 96 which is received by aperture 98 . St~hili7.ing plate 88 is also mounted in pivot pin 96 to provide a space within which the pawl 86 will move and to provide lateral stability to the assembly 80. the st~hili7ing plate 88 is able to rotate with the seat bracket 84 and pawl 86. The latch pawl is pivotally mounted for rotation with the seat bracket at and st~hili7.ing plate 88 through pivot pin 102 which exten-l~q from the stabilizing plate 88 through an aperture in the latch pawl 144 and aperture 112 in the 5 seat bracket 84. ~he stabilizing plate 88 thereby sandwlches the latch pawl 86 against the seat bracket 84 and st~hili7.es the movement of the bracket mounted to the mounting bracket 82 to provide lateral stability to the hinge and latch meçh~ni.qm.s.
A hi~.qing means in the form of a spring 90 ~tt~ched to pin 116 on latch pawl 86 and hook portion 114 on st~h11i7.~ng plate 88 biases the latch pawl 86 towards the detente portions 106 and 108 located on the mounting bracket 82. Pin 116 ~xtenfl.s through the latch pawl (not shown) to ride in slot 104 to define limits of the path of travel of the latch pawl. Apertures 130 disposed in seat bracket arm 130a, and 134 15 on seat bracket 84 provides the means for ~tt~rhm~nt to the seat cushion 74. Cable guide means and stop means 110 is provided to align and support the interconnecting cable (not shown), extending along a predele~ l.led path of travel from a latch release (one example thereof being shown in Figure 10) to the latch pawl pin 116 extending from the 20 latch pawl thereby providing a point of ~tt~hment for the cable.
As best seen in Figures 3 and 5 the latch pawl in 86 engages detente 106 located in the upper portion of the mounting bracket 82 to ~rev~llt rotation of the seat bracket 84 when the seat 74 is in the lower operative position. When the latch pawl 86 is pulled in direction A to 25 disengage detente portion 106, the latch pawl can travel along the upper surface 148 by the mounting bracket 82 as the seat 74 is being folded into a storage position as best seen in Figure 2B. Referring again to Figure 5 it will be seen that detente portion 108 located in the mounting bracket 82 is positioned for locking the latch pawl when the seat 30 bracket 84 carries the seat cllqhion to the fully folded position.
- 18- 2~8Q282 As can be seen in relation to Figure 2A and B the seat 74 is ~tt~ched as described above to seat bracket 84 plox~ te end 130a. The seat back 72 is also secured to the seat bracket at arm 132a. The point 132 therefore provides a point of attachment to seatback 72 as well as a pivot point to allow the end of the seatback to move as the seat 74 is folded. The top of se~th~-k 72 is retained in position by a Z shaped clip C
having 2 ends Cl and C2. End C2 is l.refelably welded to the seatback.
End Cl is clipped over a yoke Yl fixed to wall W of the vehicle. The clip end Cl is resilient in nature to retain the top of the seatback 72 in position as the se~th~ck bottom moves downwardly and toward the rear to compensate for the space required for the pivoting seat 74. Therefore as the seat 74 is folded the lower end of seat back 72 moves toward the rear to wall W to allow space for the seat 74 to reach the stored position.
As best seen in Figure 4, the tooth portion of 150 of the latch pawl 86 tapers towards the le~-ling edge 120 of the tooth portion 150.
The le~ n~ edge laO is also angled so that the trailing corner 126 of the tooth portion 150 does not come into contact with surface 108a of the mountlng bracket when the latch pawl is rotated into detente 108.
The prlmary contact of the tooth portion 150 of the latch pawl 86 is surfaces 118 whereat the le~-1ing corner of the tooth portion 124 abuts and the l~ng edge 126 of pawl 86 abuts edge 146 of the detente 108. A
gap therefor is provide near the bottom of detente 108 which gap will reduce in time resulting in the edge 120 of pawl 86 coming closer to bottom 108a of detente 108 as time progresses. Therefore as the tooth 150 wears it will tend to better engage the detente 108. As shown in Figure 4 the wear on the latch pawl 86 does not therefore effect its engagement with the detente portion 108. The edge 146 of the detente means 108 is arcuate to minimi~e wear of corner 126 furthermore le~(ling with 152 of the detente portion is rounded so that to minimi~e the wear on corner 126. The corner 126 descends into detente 108 and comes into contact with surface 146 of the detente means 108 which surfaces of the tooth portion are under minimum wear because of the smooth arcs provided with surfaces 146 118 126 and 124 (which is described in detail in relation to Figure 4A) .
Referring to Figure 4A there is illustrated the pawl 86 pivoting on pivot P4 and provided with a pin 116 to be ~tt~hed to a cable for actll~t1On of the pawl. The geometry of the tooth 150 and detente 108 therefore are defined by arc lengths Rl from point Pl for surface 124 of tooth 150 and R2 from point P2 for surface 126 of tooth 150 selected to co,~verge towards the bottom of the detente 108a. The points Pl and P2 are selected as offset by 1.5mm from point P3. Point P3 is located by offsetting 6.3mm from P4 to ensure that the resultant arcs are not concentrlc with P4 and drawings a line at theta degrees ( which angle is a~lox~ te of the angle at which the tooth 150 is established estim~ted to be 25 degrees) from the horizontal passing through point P3. To ensure the smooth m~t~n~ of the detente surfaces 146 and 118 the arcs Rl and R2 are reversed so that R2' is est~hli.ched form Pl' and Rl' is est~hl1.cherl from P2'.
As seen in Figures 6 and 7 the ~ctll~tor 10 is provided with support bracket 22 in the form of a plate for supporting the eng~ging portion 20. The ~ne~np portion 20 includes a first member 34 pivotally ~tt~hed to the support 22 by connector 12 which has pinion like ends 14 and 16 for rotatable connection to an operating handle and the eng~ng means respectively. The ~n~ng portion 20 is provided with an aperture 8 which has compatible interior walls for cooperation with the end of connector 16. The eng~ing portion provides a lever assembly including a first member 34 attached to the connector as described above and a second member 36 extending from the first member which pivots separately the-eLvlll at 38. The first member 34 is linked to the second member 36 for articulation therewith by a link end 40 which moves member 36 when member 34 is moved. Member 36 also has disposed near its end remote member 34 a roller 44 for engagement with the cable 24. The roller is pivotably mounted to the member 36 through pivot pin 6. The member 34 includes a tooth like 5 link 40 which is slidably mounted within a guide slot 42 located on ~he face of the second member 36. The second member 36 is pivotably mounted to the support 23 in a second pivot position by pivot pin 38 whlch is located between the flrst pivot position 16 and the position of the tooth 40. This will cause the tooth to ride downward along guide 10 means 42 when the unit is operated. A biasing spring 46 ~xtencls from bracket 4 to the back plate 2 of the second member 36. The spring 46 serves to bias the lever means into a fully extended inoperative position as described below in reference to Figure 8.
The support bracket 22 is provided with eyelet 28 and 30 15 for supporting the cable in position for engagement along a predetelmllled path. As best seen in Figure 6 a cable mounting pin 26 is affixed to one end of the cable and supports this end of the cable in a fixed position. On the other end cable sleeve 32 ~tt~çhe-l to eyelet 28 provides a guide for slidably supporting the cable. In this arrangement 20 the cable can be deflected to alternative pat-h-s as the handle is operated which causes the roller 44 to adopt position 54 depending on which way the h~n~lle is operated. The motion of the roller 44 serves to move the end of the cable proximal to the latch meçh~n~sm towards the bi-directional actuator since the cable moves out of its normal path to a 25 second path 56 c~llRing the free end of the cable attached to the pawl as seen in Figure 10 to move towards the release meçh~niRm and thereby ~ml~trh the pawl.
Reference to Figure 10 also illustrates that the same cable may be threaded through two bi-directional ~çtll~tors so that either but 30 not both bi-directional actuators may be used to operate both latch - 21 - 20~0282 mech~ni~qmq. Each bi-directional actuators is provided v~ith a preferred operating means in the form of a handle 18.
As best seen in Figure 8 rotation of the actuator to operative positions on either side of the fully extended inoperative position causes 5 the cable to be deflected along an ~lt~rn~te path which serves to draw the end of the cable proximal to the latch means towards the bi-directional ~ctll~tor. It will be appreciated that a bi-directional ~ctll~tor embodying the invention can be used to actuate any remotely actuated device wherein the bi-directional aspect proves advantageous. The two 10 operative positions are shown in Figure 8.
As best seen in Figure 9 rotation of the member 34 causes displacement the second member 36 into angular rel~tion.qhir s with i~rst member 34 and causes rotation of the roller 44 over a distance A. This increased arc of rotation allows increased displ~cement of the cable 24 15 which allows in one embo-liment the bi-directional actuator to slmultaneously operate two latch pawls when the cable is suitably ten.qione-l as best seen in Figure 10.
As seen in Figure 8 the distance between this first pivot 16 and the point of engagement with the cable 24 decreases when the roller 20 44 is rotated into the operative position.q due to the motion of the roller as seen in Figure 8 in the operative position.q. The tooth 30 is designed to cooperate with the slot 42 which tooth 30 wlll ride along the slot 42 to compensate for the shortened distance.
~s many changes can be made to the invention without 25 departing from the scope of the invention, it is intended that all material co..tz.l.-ed herein by illtel~reled as illusll~Uve of the invention and not in a limlting sense.
Seat Hinge and Latch Assembly with Bi-directional Release FIELD OF INVENTION
This invention relates to a latch assembly and a release 5 merh~ni~cm therefore and finds particular application in automotive vehicles and specifically in folding seats for trucks to allow more cargo space.
BACKGROUND OF ~HE INVENTION
It is known in the prior art to provide a pivoting seat, which 10 pivots and locks with respect to a seat back. An ~mple of such a seat is United states Patent 4,793,649. As best seen in relation to Figure 2 the assembly requires supplement~ry pawl and detente members 28a and 30 which complic~te the structure. It would be advantageous if the l~tching positions were defined with the mounting bracket and the pawl mounted 15 with the seat bracket to simplify the ~csçmhly. Further the seat back and the seat are ~tt~che~ to the ~.csemhly with separte brackets and therefore there is no provision for the interrelationship of the movements thereof.
It is also know to provide a release for seats, hootil~tches, trunks or the like which operates by tllrning a handle in a predete~ lled 20 direction. For seats specifically it would be advantageous to operate the release handle in either direction to release and move the seat.
Known latch structures and speciflcally the pawls thereof wear in time and therefore introduce rattles and other unpleasant noises into the operation thereof over time. There therefore exists a need to 2 5 provide a latching member with a wear resistant design which compenc~tes for the many cycles thereof by wearing in a predetermined m~nnçr so as to ensure cooperation of the parts through the extended life thereof.
Nowhere in the prior art is there found a simplifled latch 30 assembly which reduces the number of parts for a pivoting seat without sacriflcing rçli~hility. It would be therefore cost effective and emcient if a a latch were available which includes detentes defined with the mounting bracket. Further the latch may be engageable by a pawl having a predetermined geometry along with the detente to compensate for cycled wear. Finally it is needed and b-on~fici~l to provide the assembly 5 with a bi-directional release to simplify operation of seat assemhlies.
It is therefore a primary ob~ect of the invention to provide a latch for a seat which ~eimplihes the number of com~ollents thereof.
It is yet a further ob~ect of the invention to provide a pawl and detente for a latch which compensates for the wear over time and 10 reduces the amount of freeplay which is introduced into a latch as the latch wears.
It is yet a further ob3ect of the invention to provide a bi-directional actuator for rele~qing a remote mech~ni.qm therefore.
Further and other ob~ects of this invention will become 15 apparent to a man skilled in the art when considering the following sllmm~ry of the invention and the more detailed description of the ~refelled embo-lim~nt.c illustrated herein.
SUMMARY OF THE INVENTION
The invention is also directed to a vehicle seat hinge and 20 latch ~.qsemhly adapted for locking a seat cll.qhion in a seating position and lockably folding said seat cll~chion into a storage position against the se~th~ cllehion, the seat and latch assemply, comprising:
a flrst bracket for mounting in a fixed position relative to the vehicle, preferably to the vehicle floor, the floor stanchion or the movable 2 5 rail of a seat rail ~.qsemhly;
a second bracket for ~tt~chment to a vehicle seat cushion and pivotally mounted to the first bracket for rotation between seating and storage positions, said second bracket preferably including a mounting portion positioned for pivotally holding the seat back for coordinated 30 displacement with the seat cushion such that at least the lower portion of the seat back cushion recedes when the seat cushion is rotated into the storage position, thus serving to increase seat folding range and/or reduce seat cushion compression, ~iefelably the mounting portion is positioned to displace the seat cushion a predetermined distance 5 towards the vehicle floor before the seat cushion is locked in the storage position;
latch means, including detente means corresponding to preferably said seating and storage positions and a pawl for lockable engagement with the detente means and preferably biasing means for 10 urging said pawl towards a latched position, the pawl ~-ere-ably pivotally mounted to said second bracket about a predetermined pivot point for coor-lin~te-l rotation therewith and more ~-efel~bly planar shaped and coplanar with said detente means, said detente means preferably u-shaped and having arcuately shaped side walls and preferably also a 15 bottom wall, the detente sidewalls are preferably two continuous walls ad~acent the bottom wall and are each shaped according a pattern deflned by an arc of a circle which has a radius of dlrrere--t length and a dlrrelellt center, both centers ~efe ably offset a predete..l.lned distance from the predele..-~ ed pivot point, the pawl, having a mounting portion 20 for pivotally mountlng the pawl with respect to said predetel.,.llled pivot point and a u-shaped tooth portion which has a front wall and arcuately shaped side walls corresponding to the detente sidewalls, that taper toward the front wall, the u-shaped tooth portion preferably (lim.on~sioned so that at least a portion of the pawl tooth sidewalls engage 2 5 the corresponding detente sidewalls, the pawl tooth sidewalls being shaped according to a pattern deflned by arcs of circles having ~rere.tlbly opposite radii len~h~ relative to the lengths deflning the shape of the corresponding detente side walls and preferably the same centers as those defining the shape of the corresponding detente walls, the radii 30 lengths used to deflne the shape of the pawl tooth sidewalls being subst~nti~lly the same and preferably identical to the radii lengths used to deflne the shape of the opposite detente sidewalls, the centers used to define the arc shapes of the pawl tooth and detente sidewalls ~refelably both off-center from to the pivot poin$ of the pawl, the tooth portion 5 preferably angularly positioned relative to the mounting portion and rlimen~q~oned to permit the sidewalls of the tooth portion to be held by the neck of the u-shaped detente means such that the le~rling edge of the tooth portion is displaced from the bottom wall of the detente means;
and prere.ably lateral st~hili7.er means preferably in the form of a plate 10 pivotally moun~ed to said first bracket, more preferably coor-lin~tely mounted with sald second bracket for rotation therewith, more preferably mounted on the same pivot as said second bracket and more preferably mounted over said pawl to sanwidch the pawl to its travel path, According to another aspect of the invention we provide a bi-directional actuator including pl~efe~ably an interconnecting means of predetermined length which is preferably in the form of a cable, for connecting said bi-directional ~ctll~tor to a remote mech~nlc~l device, for mple a pawl, and l.lererably operating means, preferably in the form 20 of handle meansj for operating said bi-directional actuator, said bi-directional actuator inclll~ling ~n~glng means for operatively ~ng~ing a first portion of the ll.teLconnecting means remote from the latch pawl mounting means for mounting said çng~ng means to a support means in ~ro~ lly to said flrst portion of the interconnecting means, ~,ere,ably 25 its own support means and p~ere-ably biasing means for biasing said eng~ng means into an inoperative position, said ~n~ing me~n.~, when mounted, movable bi-directionally by the operating means from the inoperative position in which the interconnecting means is aligned in a predetermined path between the actuator and the pawl, to at least two 30 operative positions in which the engaging means deflects the ~ 5~ 2080282 interconnecting means along an alternative path such that the end of the interconnecting means attached to the latch pawl is displaced a predetermined distance towards the actuator, preferably the eng~p~ing means is movable in opposite directions relative to said inoperative 5 position to at least two respective operating positions, and more preferably the eng~ng means includes lever means pivotally mountable for rotation between said inoperative and operative positions and contact means for eng~ng said interconnecting means, said contact means preferably including a pulley wheel mounted for rotation on the lever 10 means, said lever means capable of exerting a preferably tangential deflecting force across said predetermined path against said interconnecting means when rotated into said operative positions, said lever means preferably lnc~ lng a iirst lever member pivotally mounted to sald support means in a flrst pivot position, a second lever member 15 e~endlng from said first lever member towards said predetermined path and linked to said first lever member for articulation therewith, and directing means to cause said second lever member to rotate in the same direction as said first lever member so as to extend the arc of rotation through which said lever means is capable of exerting a displ~ ng force 20 against the interconnecting means, said second lever member is preferably pivotally mounted to said support means in a second offset pivot position, said second pivot position proximal to said predetermined path relative to said flrst pivot position and preferably positioned between said flrst pivot position and the point of articulation between said first 25 and second lever members, said first lever member more preferably slidably linked to said second lever member such that the lever means can occupy an angular configuration in which the distance between the flrst pivot position and the contact means is shortened, said directing means preferably including a pivot arm ~ten~ling from one of said first 30 and second levers members and longitudally positioned guide means , . .
located on the other of said lever arms for slidably receiving said pivot arm, said pivot arm preferably positioned to articulate with said guide means along the length thereof and preferably mounted on said first lever member, ~lerelably said guide means is a longitudinal slot located said second lever member and said pivot arm exerts a preferably tangential deflecting force on either side of said slot to rotate the second lever member in the direction of rotation of said flrst lever member, said guide means also preferably including stop means for deflning the angle of rotation of second lever means, ~refel~bly the support means includes mounting means for operatively ~ligning said interconnecting means along said predeLelmllled path, preferably the mounting means includes a connector which fixes the position of the end of the interconnecting means remote from the pawl to deflne an end point of the predermined path and a guide for aligning said another portion of said interconnecting means in said predetermined path, preferably the connector and first guide means define a predetermined path which lies in the plane of rotation of said contact means and said contact means is pocit~one~l to engage said predeterminedportion of the interconnecting means at a point between said connector and guide.
The invention is also directed to a pawl adapted for engagement with a subst~nti~lly u-shaped detente means, said detente means having arcuately ~sh~re-l side walls and preferably a bottom wall, the detente sidewalls are preferably two continuous walls ad~acent the bottom wall and are shaped according a pattern deflned by arcs of circles which correspond to radii of dlrrerellt lengths and different centers, the pawl, ~referably planar shaped, having a mounting portion for pivotally mounting the pawl with respect to a predelelmlned pivot point and a u-shaped tooth portlon which has a front wall and arcuately shaped side walls colle~onding to the detente sidewalls that converge toward the front wall, the u-shaped tooth portion preferably dimensioned so that at 20~0282 least a portion of the pawl sidewalls ~lerel~bly engage the corresponding detente sidewalls, the pawl sidewalls being shaped according to a pattern defined by arcs of circles having preferably opposite radii lengths relative to the lengths defining the shape of the corresponding detente side walls 5 and preferably the same centers as those d~fining the shape of the corresponding detente walls, the radii lengths used to deflne the shape of the pawl sidewalls being subst~nti~lly the same and preferably identical to the radii lengths used to define the shape of the opposlte detente sidewalls, the centers used to define the arc shapes the pawl and detente 10 sidewalls prerelably both off-center from the pivot point of pawl, the tooth portion more preferably angularly positioned relative to the mounting portion and ~limen.cioned to permit the sidewalls of the tooth portion to be held by the neck of the u-shaped detente means such that the le~ ng edge of the tooth portion is displaced from the bottom wall of 15 the detente means.
According to one aspect of the invention we provide a vehicle seat hinge and latch assembly operable by at least one remote seat latch release and adapted for locking a seat cushion of a seat in a seating position and lockably folding said seat cushion into a storage position 20 against the seat-back cuchinn. comprising:
a first bracket for mounting in a fixed position relative to the vehicle, ~rere.~bly to the vehicle floor, the floor st~nchion or the movable rail of a seat rail ~.csemhly;
a second bracket for ~tt~hment to a vehicle seat cushion and 25 pivotally mounted to the flrst bracket for rotation between seating and storage posltlonc, said second bracket ~refel~bly including a mounting portion positioned for pivotally holding the seat back for coordinated displ~ment with the seat cushion such that at least the lower portion of the seat back cushion recedes when the seat cushion is rotated into the 30 storage position so as to increase seat folding range and/or reduce seat - 8- 20~0282 cushion compression, preferably the mounting portion is positioned to displace the seat cushion a predetermined distance towards the vehicle floor before the seat cushion is locked in the storage position;
latch means including detente means corresponding to said 5 seating and storage positions and a pawl for lockable engagement with the detente means and preferably biasing means for urging said pawl towards a latched position, the pawl ~lere ably pivotally mounted to said second bracket for coordinated rotation therewith and more ~refelably planar shaped and coplanar with said detente means, said detente means 10 preferably u-shaped and having arcuately shaped side walls and preferably a bottom wall, the detente sidewalls are ~rererably two continuous walls ad~acent the bottom wall and are shaped according a pattern deflned by arcs of circles which correspond to radii of different lengths and dlrreiellt centers, the pawl, preferably planar shaped, and having a 15 mounting portion for pivotally mounting the pawl with respect to a predetermined pivot point and a preferably u-shaped tooth portion which has a front wall and arcuately shaped side walls corresponding to the detente sidewalls that converge toward the front wall, the ~rererably u-shaped tooth portion ~,ererably ~lim~n.cione~ so that at least a portion 20 of the pawl sidewalls engage the colles~onding detente sidewalls, the pawl sidewalls being shaped according to a pattern defined by arcs of circles having E,rererably opposite radii lengths relative to the lengths deflning the shape of the corresponding detente side walls and ~r~rerably the same centers as those deflnin~ the shape of the corresponding 25 detente walls, the radii lengths used to deflne the shape of the pawl sidewalls being sl~hs~nti~lly the same and preferably identical to the radii lengths used to deflne the shape of the opposite detente sidewalls, the centers used to deflne the arc shapes of the pawl and detente sidewalls preferably both off-center from the pivot point of pawl, the tooth portion 30 more preferably angularly positioned relative to the mounting portion and ~imen.cjQned to permit the sidewalls of the tooth portion to be held by the neck of the u-shaped detente means such that the le~rling edge of the tooth portion is displaced from the bottom wall of the detente means:
remote latch release means including preferably at least one 5 bi-directional ~ctll~tor for releasing said pawl, an interconnecting means of predetermined length, preferably in the form of a cable, for connecting said bi-directional actuator to said pawl, and preferably operating means, more preferably in the form of handle means, for operating said bi-directional actuator, said bi-directional actuator including en ~ging 10 means for operatively engPging a predetermined portion of the interconnecting means remote from the latch pawl, mounting means for mounting said ~ng~lng means to a support means in ~-o~lllllly to said predetermined portion of the interconnecting means, preferably a support means and ~-efel~bly b~ ng means for bi~ing said eng~ging 15 means into an inoperative position, said engP~ing means, when mounted, movable bi-directionally by the operating means from the inoperati~e position in which the interconnecting means is aligned in a predetermined path between the ~-~tll~tor and the pawl, to at least two operative positions in which the engPging means deflects the 20 interconnecting means along an alternative path such that the end of the interconnecting means attached to the latch pawl is displaced a predeLe.mll.ed distance towards the ~cl.~to., preferably said alternative directions are opposite one another relative to said inoperative position and more ~Lefe-~bly the engP~ng means includes lever means pivotally 25 mountable for rotation between said inoperative and operative positions and contact means for ~ngP~ng said intelcollllecting means, said contact means ~reÇelably including a pulley wheel mounted for rotation on the lever means, said lever means c~p~hle of exerting a tangential deflecting force across said predetermined path said interconnecting means when 30 rotated into said operative positions, said lever means preferably including a first lever member pivotally mounted to said support means in a first pivot position, a second lever member ~xt~n-lin~ from said first lever member towards said predetermined path and linked to said first lever member for artic~ tlon therewith and directing means to cause 5 said second lever member to rotate in the same direction as said first lever member so as to extend the arc of rotation through which said lever means is capable of exerting a displacing force against the interconnecting means, said second lever member is ~refelably pivotally mounted to said support means in a second offset pivot position, said 10 second pivot position ~lox~ al to said predetermined path relative to said first pivot position and preferably positione-1 between said first pivot position and the point of artlcul~tlon between said first and second lever members, said first lever member more ~lerel~bly slidably linl~ed to said second lever member such that the lever means can occupy an angular 15 configuration in which the .1l~et~nce bet~,veen the first pivot position and the contact means i9 shortened, said directing means preferably including a pivot arm çxt~n-l1ng from one of said first and second levers members and lo~tl~ lly po~qltionefi guide means located on the other of said lever arms for slidably receiving said pivot arm, said pivot arm 20 preferably po~qitione-l to articulate with said guide means along the length thereof and preferably mounted on said first lever member, ~refelably said guide means is a lon~tlldinal slot located said second lever member and said pivot arm exerts a preferably tangential deflecting force on either side of said slot to rotate the second lever member in the 25 direction of rotation of said flrst lever member, said guide means also ,rererably including stop means for dçfining the angle of rotation of second lever means, preferably the support means includes holding means for operatively ~ ning said portion of the interconnecting means along said predetermined path, ~rerelably the mounting means includes 30 a connector which fixes the position of the end of the interconnecting means remote from the pawl to define an end point of the predermined path and a guide for ~ligning said predetermined portion of said interconnecting means in said predetermined path, preferably the connector and guide define a predetermined path which lies in the plane of rotation of said contact means and said contact means is positioned to engage said predetermined portion of the interconnecting means at a point between said connector and guide;
and preferably lateral st~hili~er means preferably in the form of a plate pivotally mounted to said first bracket, more preferably coorrl~n~tçly mounted with said second bracket for rotation therewith, more ~referably mounted on the same pivot as said second bracket and more preferably mounted over said pawl to sandwich the pawl to its travel path.
The invention is particularly directed to a vehicle seat hinge and latch assembly adapted for locking a seat cushion of a seat into a seating position and lockably fol~1in~ said seat cushion into a storage position ~in.~t the seat back cushion of said seat, said seat hinge and latch assembly comprising:
a first bracket for mounting in a fixed position relative to the vehicle;
a second bracket for ~tt~chment to a vehicle seat cll.chion, said second bracket pivotally mounted to the flrst bracket for rotation between operative and storage position.~; and latch means including detent means corresponding to the seating and storage positions and a pawl for lockable engagement with the detente means, said pawl mounted to said second bracket for coor-lin~ted rotation therewith such that the pawl lockably engages the respective detente means when the seat is rotated into a seating and storage position.
The invention is also particularly directed to a vehicle seat hinge and latch assembly adapted for locking a seat cushion of a seat into a seating position and lockably folding said seat cushion into a storage position against the seat back cushion of the seat, said seat hinge and latch assembly colllplisillg:
a first bracket for mounting in a fixed position relative to a vehicle;
a second bracket pi~otally mounted to the first bracket for rotation between seating and storage positions, said second bracket including a mounting portion positioned to pivotally hold the seat back cushion for coordinated displ~c~m~nt with the seat cushion such that at least the lower portion of the seat back cll.qhion recedes when the seat cushion is rotated into the storage po.sition; and latch means including detente means corresponding to said se~t~ng and storage positions and a pawl for lockable engagement with said detente means.
The lnvention is also particularly directed to a vehicle seat hinge and latch assembly adapted for locking a seat cllchiorl of a seat into a se~t1ng position and lockably fol-ling said seat cushion into a storage position against the seat back cushion of the seat, said seat hinge and latch ~.qs~mhly coll-l, lslllg:
a flrst bracket for mounting in a flxed position relative to a vehicle:
a second bracket pivotally mounted to the flrst bracket for rotation between seating and storage positions, said second bracket including a mounting portion for use in con~unction with independent connecting means which pivotally hold the top of the seat back from receding, the mounting portion positioned to pivotally hold the seat back cushion for coordin~te-l displacement with the seat cushion such that the lower portion of the seat back cushion recedes when the seat cushion is rotated into the storage position; and latch means including detente means corresponding to said seating and storage positions and a pawl for lockable engagement with said detente means.
The invention is also particularly directed to a bi-directional 5 actuator for operating at least one remote mechanical device using an interconnecting means of predetermined length, comprising:
eng~ging means for operatively eng~ging a predetermined portion of the interconnecting means remote from the mechanical device; and a mounting means for mounting said eng~ing means to a support means in yro~lllity to said predetermined portion of the interconnecting means;
said engaging means, when mounted, movable bi-directionally, by an operating me~nc~ from an inoperative position in 15 which the interconnecting means is aligned in a predetermined path between the ~ctll~tor and the me~.h~nic~l device, to at least one operative position in which the eng~gln~ means deflects the predetermined portion of the interconnecting means along an alternate path such that the end of the in~ercollnecting means yi~lmal to the mechanical device 20 is displaced a predetermined distance towards the bi-directional 2 r~h l~t~r.
The invention is also particularly directed to a vehicle seat comrrlRing a seat cllchion, a seat back cllchion mounted to the vehicle, a seat hinge and latch assembly located at each side of the 25 seat cushion for locking the seat cushion into a seating position and lockably folding the seat cllRhion into a storage position against the seat back cll.chion, and a seat latch release, the seat hinge and latch assembly having a first bracket for mounting in a fixed position relative to the vehicle, a second bracket for ~tt~.hm~nt to a vehicle seat cushion, said 30 second bracket pivotally mounted to said first bracket for rotation - 14- 2~
between seating and storage positions, and latch means including detente means col-c:~onding to the seating and storage positions and a pawl for lockable engagement with the detente means, said detente means carried by said first bracket.
This invention is also particularly directed to a vehicle seat hinge and latch ~.cs~mhly adapted for locking a seat cushion of a seat into a seating position and lockably folding said seat cushion into a storage position against the seat back cushion of the seat, said seat hinge and latch assembly colllpllsll,g:
a flrst bracket for mounting in a fixed position relative to the vehicle;
a second bracket for ~tt~hmçnt to a vehicle seat cll.chion, said second bracket pivotally mounted to said first bracket for rotation between seattng and storage position.c; and latch means including detente means correspo~(lin~ to the seating and storage positions and a pawl for lockable engagement with said detente me~n.q, said detente means carried by said first bracket.
BRIEF DEscRI~rIoN OF THE DRAWINGS
The invention will now be illustrated with respect to the followlng drawings illustrating embo-limçnt~ of the invention in which:
Figure 1 is a sçhçm~tic representation of a truck having a folding rear seat which folds from an operative position into a storage posltion and illustrated in a ~refclled embodiment of the invention.
Figure lA and lB are a schematic views illustrating alternative embodiments of the invention.
Figure 2 is an exploded perspective view of a a seat hinge and latch assembly illustrated in a preferred embodiment of the invention.
Figure 2A and 2B are side view of the seat of Figure 1 illustrated in a ~lcre-lcd embodiment of the invention.
Figure 3 is a front elevation of the seat hinge and latch assembly of Figures 2A and 2B illustrating the latch pawl positions for locking the seat in an operative position.
Figure 4 and 4A are a close-up schem~tic views of the latch 5 pawl of Figure 3 illustrating the design of the wear char~ct~ri.etics of the pawl and detente.
Figure 5 is a front elevation of the seat hinge and latch assembly of Figure 1 illustrating the assembly bolted to a vehicle floor and the motion of the second arm and the latch pawl when rotated into 10 the storage po.si~ion.
Figure 6 is a perspective view of a bi-directional actuator illustrated according to a ~e~l.ed embo-liment of the invention.
Figure 7 is a side elevation of the bi-directional actuator of Flgure 6 shown in cross-section along the line 2-2 in Figure 6.
Figure 8 is a schem~tic view of the ~n~ing portions of the ~ct1l~tor of Figure 6 shown in the inoperative and operative positions illustrating bi-directional actions thereof and illustrated in a ~rerel.ed embo-llment of the invention.
Figure 9 is a diagr~mm~tic representation the eng~ng 20 portions of Figure 6 illustrating the artic~ tion of the first and second members of the levers to increase the arc of rotation of the eng~gine means.
Figure 10 is a schem~tlc view of a seat cont~1nine many embo-llment.~ of the invention.
INVENTION
Referring now to Figure 1 there is illustrated a pickup truck 70 which has a drivers seat S2 and seatback B2 installed in the cab thereof. Behind the seat is disposed a folding seat 74 which folds to and 30 from operative and stored positions. A latch and hinge assembly 80 is therefore provided which is fastened to the floor F by a bracket 92 as best seen in Figure 2. The bracket 92 has detente positions described therewith to latch a rele~.e~hle pawl 86 with respect thereto. The pawl 86 is affixed to a seat bracket 84 which is fixed to the seat 74 at 130 and 134 and pivotally to the se~th~ck 72 at 132 to provide for motion of the bottom end of the se~th~ck as illustrated in Figure 2A and 2B. The top of the seatback 72 is held in position by a clip C which engages a yoke Y and retains the seatback in position ~lox~ te the top thereof while the bottom moves rearwardly to allow for space for the folding of the seat 74.
The pawl 86 is remotely rele~.e~hle from the detente of the seat (as best seen in Figure 10) allowing motion of the seat 74.
As shown in Figure lA, a seat hinge and latch assembly 80"
according to an alternative embo-lim~nt of the invention is provided to control the motion of the seat cushion 74" of a rear seat 78" of van 70"
to increase the storage space at the rear of the van. This is accompli~hed by rotating the seat cushion 74" from the operative position thereof to the folded position thereof ~in~st the seat back 72" as described above.
Refering now to Figure lB there is illustrated in an alternative embo-liment of the invention the seat 74' and sç~th~ck 72' defining a seat assembly S3 wherein the seat 74' moves independent of the seatback 72' and folds ad~acent the back 72' by the l~tching and pivoting assembly 80'.
The seat 74' is affixed to the seat bracket 84". The pawl 86' is rele~.q~hle with the detentes of mounting bracket 92'. There is no cooperative motion of the se~th~ck 72" in this embo-1iment Referring now to Figures 2, 3 and 5 the seat hinge and latch assembly 80 includes the mounting bracket 82 for mounting to the vehicle for ~tt~chment to the seat bracket 84 by a pivot pin 96 which is received by aperture 98 . St~hili7.ing plate 88 is also mounted in pivot pin 96 to provide a space within which the pawl 86 will move and to provide lateral stability to the assembly 80. the st~hili7ing plate 88 is able to rotate with the seat bracket 84 and pawl 86. The latch pawl is pivotally mounted for rotation with the seat bracket at and st~hili7.ing plate 88 through pivot pin 102 which exten-l~q from the stabilizing plate 88 through an aperture in the latch pawl 144 and aperture 112 in the 5 seat bracket 84. ~he stabilizing plate 88 thereby sandwlches the latch pawl 86 against the seat bracket 84 and st~hili7.es the movement of the bracket mounted to the mounting bracket 82 to provide lateral stability to the hinge and latch meçh~ni.qm.s.
A hi~.qing means in the form of a spring 90 ~tt~ched to pin 116 on latch pawl 86 and hook portion 114 on st~h11i7.~ng plate 88 biases the latch pawl 86 towards the detente portions 106 and 108 located on the mounting bracket 82. Pin 116 ~xtenfl.s through the latch pawl (not shown) to ride in slot 104 to define limits of the path of travel of the latch pawl. Apertures 130 disposed in seat bracket arm 130a, and 134 15 on seat bracket 84 provides the means for ~tt~rhm~nt to the seat cushion 74. Cable guide means and stop means 110 is provided to align and support the interconnecting cable (not shown), extending along a predele~ l.led path of travel from a latch release (one example thereof being shown in Figure 10) to the latch pawl pin 116 extending from the 20 latch pawl thereby providing a point of ~tt~hment for the cable.
As best seen in Figures 3 and 5 the latch pawl in 86 engages detente 106 located in the upper portion of the mounting bracket 82 to ~rev~llt rotation of the seat bracket 84 when the seat 74 is in the lower operative position. When the latch pawl 86 is pulled in direction A to 25 disengage detente portion 106, the latch pawl can travel along the upper surface 148 by the mounting bracket 82 as the seat 74 is being folded into a storage position as best seen in Figure 2B. Referring again to Figure 5 it will be seen that detente portion 108 located in the mounting bracket 82 is positioned for locking the latch pawl when the seat 30 bracket 84 carries the seat cllqhion to the fully folded position.
- 18- 2~8Q282 As can be seen in relation to Figure 2A and B the seat 74 is ~tt~ched as described above to seat bracket 84 plox~ te end 130a. The seat back 72 is also secured to the seat bracket at arm 132a. The point 132 therefore provides a point of attachment to seatback 72 as well as a pivot point to allow the end of the seatback to move as the seat 74 is folded. The top of se~th~-k 72 is retained in position by a Z shaped clip C
having 2 ends Cl and C2. End C2 is l.refelably welded to the seatback.
End Cl is clipped over a yoke Yl fixed to wall W of the vehicle. The clip end Cl is resilient in nature to retain the top of the seatback 72 in position as the se~th~ck bottom moves downwardly and toward the rear to compensate for the space required for the pivoting seat 74. Therefore as the seat 74 is folded the lower end of seat back 72 moves toward the rear to wall W to allow space for the seat 74 to reach the stored position.
As best seen in Figure 4, the tooth portion of 150 of the latch pawl 86 tapers towards the le~-ling edge 120 of the tooth portion 150.
The le~ n~ edge laO is also angled so that the trailing corner 126 of the tooth portion 150 does not come into contact with surface 108a of the mountlng bracket when the latch pawl is rotated into detente 108.
The prlmary contact of the tooth portion 150 of the latch pawl 86 is surfaces 118 whereat the le~-1ing corner of the tooth portion 124 abuts and the l~ng edge 126 of pawl 86 abuts edge 146 of the detente 108. A
gap therefor is provide near the bottom of detente 108 which gap will reduce in time resulting in the edge 120 of pawl 86 coming closer to bottom 108a of detente 108 as time progresses. Therefore as the tooth 150 wears it will tend to better engage the detente 108. As shown in Figure 4 the wear on the latch pawl 86 does not therefore effect its engagement with the detente portion 108. The edge 146 of the detente means 108 is arcuate to minimi~e wear of corner 126 furthermore le~(ling with 152 of the detente portion is rounded so that to minimi~e the wear on corner 126. The corner 126 descends into detente 108 and comes into contact with surface 146 of the detente means 108 which surfaces of the tooth portion are under minimum wear because of the smooth arcs provided with surfaces 146 118 126 and 124 (which is described in detail in relation to Figure 4A) .
Referring to Figure 4A there is illustrated the pawl 86 pivoting on pivot P4 and provided with a pin 116 to be ~tt~hed to a cable for actll~t1On of the pawl. The geometry of the tooth 150 and detente 108 therefore are defined by arc lengths Rl from point Pl for surface 124 of tooth 150 and R2 from point P2 for surface 126 of tooth 150 selected to co,~verge towards the bottom of the detente 108a. The points Pl and P2 are selected as offset by 1.5mm from point P3. Point P3 is located by offsetting 6.3mm from P4 to ensure that the resultant arcs are not concentrlc with P4 and drawings a line at theta degrees ( which angle is a~lox~ te of the angle at which the tooth 150 is established estim~ted to be 25 degrees) from the horizontal passing through point P3. To ensure the smooth m~t~n~ of the detente surfaces 146 and 118 the arcs Rl and R2 are reversed so that R2' is est~hli.ched form Pl' and Rl' is est~hl1.cherl from P2'.
As seen in Figures 6 and 7 the ~ctll~tor 10 is provided with support bracket 22 in the form of a plate for supporting the eng~ging portion 20. The ~ne~np portion 20 includes a first member 34 pivotally ~tt~hed to the support 22 by connector 12 which has pinion like ends 14 and 16 for rotatable connection to an operating handle and the eng~ng means respectively. The ~n~ng portion 20 is provided with an aperture 8 which has compatible interior walls for cooperation with the end of connector 16. The eng~ing portion provides a lever assembly including a first member 34 attached to the connector as described above and a second member 36 extending from the first member which pivots separately the-eLvlll at 38. The first member 34 is linked to the second member 36 for articulation therewith by a link end 40 which moves member 36 when member 34 is moved. Member 36 also has disposed near its end remote member 34 a roller 44 for engagement with the cable 24. The roller is pivotably mounted to the member 36 through pivot pin 6. The member 34 includes a tooth like 5 link 40 which is slidably mounted within a guide slot 42 located on ~he face of the second member 36. The second member 36 is pivotably mounted to the support 23 in a second pivot position by pivot pin 38 whlch is located between the flrst pivot position 16 and the position of the tooth 40. This will cause the tooth to ride downward along guide 10 means 42 when the unit is operated. A biasing spring 46 ~xtencls from bracket 4 to the back plate 2 of the second member 36. The spring 46 serves to bias the lever means into a fully extended inoperative position as described below in reference to Figure 8.
The support bracket 22 is provided with eyelet 28 and 30 15 for supporting the cable in position for engagement along a predetelmllled path. As best seen in Figure 6 a cable mounting pin 26 is affixed to one end of the cable and supports this end of the cable in a fixed position. On the other end cable sleeve 32 ~tt~çhe-l to eyelet 28 provides a guide for slidably supporting the cable. In this arrangement 20 the cable can be deflected to alternative pat-h-s as the handle is operated which causes the roller 44 to adopt position 54 depending on which way the h~n~lle is operated. The motion of the roller 44 serves to move the end of the cable proximal to the latch meçh~n~sm towards the bi-directional actuator since the cable moves out of its normal path to a 25 second path 56 c~llRing the free end of the cable attached to the pawl as seen in Figure 10 to move towards the release meçh~niRm and thereby ~ml~trh the pawl.
Reference to Figure 10 also illustrates that the same cable may be threaded through two bi-directional ~çtll~tors so that either but 30 not both bi-directional actuators may be used to operate both latch - 21 - 20~0282 mech~ni~qmq. Each bi-directional actuators is provided v~ith a preferred operating means in the form of a handle 18.
As best seen in Figure 8 rotation of the actuator to operative positions on either side of the fully extended inoperative position causes 5 the cable to be deflected along an ~lt~rn~te path which serves to draw the end of the cable proximal to the latch means towards the bi-directional ~ctll~tor. It will be appreciated that a bi-directional ~ctll~tor embodying the invention can be used to actuate any remotely actuated device wherein the bi-directional aspect proves advantageous. The two 10 operative positions are shown in Figure 8.
As best seen in Figure 9 rotation of the member 34 causes displacement the second member 36 into angular rel~tion.qhir s with i~rst member 34 and causes rotation of the roller 44 over a distance A. This increased arc of rotation allows increased displ~cement of the cable 24 15 which allows in one embo-liment the bi-directional actuator to slmultaneously operate two latch pawls when the cable is suitably ten.qione-l as best seen in Figure 10.
As seen in Figure 8 the distance between this first pivot 16 and the point of engagement with the cable 24 decreases when the roller 20 44 is rotated into the operative position.q due to the motion of the roller as seen in Figure 8 in the operative position.q. The tooth 30 is designed to cooperate with the slot 42 which tooth 30 wlll ride along the slot 42 to compensate for the shortened distance.
~s many changes can be made to the invention without 25 departing from the scope of the invention, it is intended that all material co..tz.l.-ed herein by illtel~reled as illusll~Uve of the invention and not in a limlting sense.
Claims (23)
1. A pawl pivotally mountable with respect to a predetermined pivot point and adapted for engagement with a substantially u-shaped detente means, said detente means having arcuately shaped sidewalls defined by arcs of a circle, each arc having a radius of different length and a different center, the pawl having a mounting portion for pivotally mounting the pawl with respect to a predetermined pivot point and a substantially u-shaped tooth portion which has a front wall and arcuately shaped sidewalls, compatible with the detente sidewalls, that converge toward the front wall, the u-shaped tooth portion dimensioned so that at least a portion of the pawl sidewalls engage the corresponding detente sidewalls, the pawl tooth sidewalls being shaped according to a pattern defined by arcs of circles having opposite radii lengths relative to the radii lengths defining the shape of the corresponding detente sidewalls and the same centers as those defining the shape of the corresponding detente walls, the radii length used to define the shape of the pawl tooth sidewalls being substantially the same as the radii lengths used to define the shape of the opposite detente sidewalls.
2. A vehicle seat comprising:
a seat back cushion assembly having a lower end and an upper end;
a seat cushion assembly having one end adjacent the lower end of said seat back assembly and an opposite end;
a mounting structure constructed and arranged with respect to said upper end of said seat back cushion assembly to mount the same so that said upper end does not move appreciably in a horizontal direction but can have limited vertical movement;
a releasably lockable mounting assembly constructed and arranged to be mounted on a floor of a vehicle and to be connected with said seat cushion and seat back cushion assemblies in a relationship which retains the one end of said seat cushion assembly adjacent the lower end of said seat back cushion assembly while enabling said assemblies to be selectively releasably moved between two locked positions consisting of (1) a sitting position wherein said seat cushion assembly extends generally horizontally from said one end thereof to the opposite end thereof to support a user sitting thereon and said seat back cushion assembly extends upwardly from the lower end thereof to the upper end thereof to support the back of a user sitting on said seat cushion assembly and (2) a storage position wherein said seat back cushion assembly and said seat cushion assembly extend generally vertically in adjacent relation alongside one another; and a cable assembly operable remote from said releasably lockable mounting assembly to release said releasably lockable mounting assembly to permit movement thereof between said sitting and storage positions.
a seat back cushion assembly having a lower end and an upper end;
a seat cushion assembly having one end adjacent the lower end of said seat back assembly and an opposite end;
a mounting structure constructed and arranged with respect to said upper end of said seat back cushion assembly to mount the same so that said upper end does not move appreciably in a horizontal direction but can have limited vertical movement;
a releasably lockable mounting assembly constructed and arranged to be mounted on a floor of a vehicle and to be connected with said seat cushion and seat back cushion assemblies in a relationship which retains the one end of said seat cushion assembly adjacent the lower end of said seat back cushion assembly while enabling said assemblies to be selectively releasably moved between two locked positions consisting of (1) a sitting position wherein said seat cushion assembly extends generally horizontally from said one end thereof to the opposite end thereof to support a user sitting thereon and said seat back cushion assembly extends upwardly from the lower end thereof to the upper end thereof to support the back of a user sitting on said seat cushion assembly and (2) a storage position wherein said seat back cushion assembly and said seat cushion assembly extend generally vertically in adjacent relation alongside one another; and a cable assembly operable remote from said releasably lockable mounting assembly to release said releasably lockable mounting assembly to permit movement thereof between said sitting and storage positions.
3. A vehicle seat according to claim 2, wherein said cable assembly comprises:
a support structure;
a flexible cable connected with said lockable mounting assembly and being movable to release said lockable mounting assembly and thereby permit said lockable mounting assembly to be moved between said sitting and storage positions;
a cable moving member mounted on said support structure and movable in two opposite directions, said moving member constructed and arranged to move said cable to release said lockable mounting assembly in response to movement thereof in either of said two directions; and a manually movable member mounted on said support structure and constructed and arranged to be manually moved to effectuate movement of said cable moving member in either of said two directions to move said cable to release said lockable mounting assembly.
a support structure;
a flexible cable connected with said lockable mounting assembly and being movable to release said lockable mounting assembly and thereby permit said lockable mounting assembly to be moved between said sitting and storage positions;
a cable moving member mounted on said support structure and movable in two opposite directions, said moving member constructed and arranged to move said cable to release said lockable mounting assembly in response to movement thereof in either of said two directions; and a manually movable member mounted on said support structure and constructed and arranged to be manually moved to effectuate movement of said cable moving member in either of said two directions to move said cable to release said lockable mounting assembly.
4. A vehicle seat as defined in claim 2, wherein said support structure is mounted on said seat cushion assembly.
5. A vehicle seat as defined in claim 2, wherein said mounting structure comprises a resilient member fixed to said seat back cushion assembly and adapted to be secured to a rear wall of the vehicle so that the upper end of the seat back cushion assembly does not move appreciably in the horizontal direction but can have limited vertical movement.
6. A vehicle seat as defined in claim 5, wherein said resilient member comprises a substantially Z-shaped clip adapted to be secured to a yoke fixed to the rear wall of the vehicle.
7. A vehicle seat as defined in claim 2, herein said releasably lockable mounting assembly comprises a detente-type locking arrangement normally biased into a locking position to prevent movement of said mounting assembly between said sitting and storage positions, said locking arrangement being movable in response to remote operation of said cable assembly against said bias to an unlocking position to permit movement of said mounting assembly between said sitting and storage positions.
8. A vehicle seat according to claim 2, wherein (i) when in the sitting position, the seat cushion assembly extends generally horizontally from said one end thereof to said opposite end with a slight upward inclination and said seat back cushion assembly extends upwardly from the lower end thereof to the upper end thereof with a slight horizontal inclination in the opposite direction, and (ii) when in the storage position, the lower end of the seat back cushion assembly is displaced horizontally in said opposite direction to an extended position so that said seat back cushion assembly extends generally vertically without a significant horizontal inclination in said opposite direction and said seat cushion assembly extends generally vertically in adjacent relation alongside said seat back cushion assembly.
9. A vehicle seat comprising:
a seat back cushion assembly having a lower end and an upper end;
a seat cushion assembly having one end adjacent the lower end of said seat back assembly and an opposite end;
a releasably lockable mounting assembly constructed and arranged to be mounted on a floor of a vehicle and to be connected with said seat cushion and seat back cushion assemblies in a relationship which retains the one end of said seat cushion assembly adjacent the lower end of said seat back cushion assembly while enabling said assemblies to be selectively releasably moved between two locked positions consisting of (1) a sitting position wherein said seat cushion assembly extends generally horizontally from said one end thereof to the opposite end thereof to support a user sitting thereon and said seat back cushion assembly extends upwardly from the lower end thereof to the upper end thereof to support the back of a user sitting on said seat cushion assembly and (2) a storage position wherein said seat back cushion assembly and said seat cushion assembly extend generally vertically in adjacent relation alongside one another; and a cable assembly operable remote from said releasably lockable mounting assembly to release said releasably lockable mounting assembly to permit movement thereof between said sitting and storage positions, said cable assembly including (i) a support structure;
(ii) a flexible cable connected with said lockable mounting assembly and being movable to release said lockable mounting assembly and thereby permit said lockable mounting assembly to be moved between said sitting and storage positions;
(iii) a cable moving member mounted on said support structure and movable in two opposite directions, said moving member constructed and arranged to move said cable to release said lockable mounting assembly in response to movement thereof in either of said two directions; and (iv) a manually movable member mounted on said support structure and constructed and arranged to be manually moved to effectuate movement of said cable moving member in either of said two directions to move said cable to release said lockable mounting assembly.
a seat back cushion assembly having a lower end and an upper end;
a seat cushion assembly having one end adjacent the lower end of said seat back assembly and an opposite end;
a releasably lockable mounting assembly constructed and arranged to be mounted on a floor of a vehicle and to be connected with said seat cushion and seat back cushion assemblies in a relationship which retains the one end of said seat cushion assembly adjacent the lower end of said seat back cushion assembly while enabling said assemblies to be selectively releasably moved between two locked positions consisting of (1) a sitting position wherein said seat cushion assembly extends generally horizontally from said one end thereof to the opposite end thereof to support a user sitting thereon and said seat back cushion assembly extends upwardly from the lower end thereof to the upper end thereof to support the back of a user sitting on said seat cushion assembly and (2) a storage position wherein said seat back cushion assembly and said seat cushion assembly extend generally vertically in adjacent relation alongside one another; and a cable assembly operable remote from said releasably lockable mounting assembly to release said releasably lockable mounting assembly to permit movement thereof between said sitting and storage positions, said cable assembly including (i) a support structure;
(ii) a flexible cable connected with said lockable mounting assembly and being movable to release said lockable mounting assembly and thereby permit said lockable mounting assembly to be moved between said sitting and storage positions;
(iii) a cable moving member mounted on said support structure and movable in two opposite directions, said moving member constructed and arranged to move said cable to release said lockable mounting assembly in response to movement thereof in either of said two directions; and (iv) a manually movable member mounted on said support structure and constructed and arranged to be manually moved to effectuate movement of said cable moving member in either of said two directions to move said cable to release said lockable mounting assembly.
10. A vehicle seat according to claim 9, wherein said cable moving member comprises a movable structure pivotally mounted on said support structure for movement in said two opposite directions, said movable structure including a cable engaging portion and being pivotally movable in said two opposite directions to enable said engaging portion to engage said cable to thereby move said cable to release said lockable mounting assembly.
11. A vehicle seat according to claim 10, wherein said flexible cable is connected with said lockable mounting assembly and said movable structure of said cable moving member is constructed and arranged so that said engaging portion thereof moves into tensioning engagement with a portion of said cable between said ends to thereby move said cable to release said lockable mounting assembly.
12. A vehicle seat according to claim 11, wherein said cable engaging portion comprises a roller rotatably mounted on said movable structure, said roller constructed and arranged to rollingly engage said cable to thereby move said cable.
13. A vehicle seat as defined in claim 9, further comprising a mounting structure constructed and arranged with respect to said upper end of said seat back cushion assembly to mount the same so that said upper end does not move appreciably in a horizontal direction but can have limited vertical movement.
14. A vehicle seat as defined in Claim 13, wherein said mounting structure comprises a resilient member fixed to said seat back cushion assembly and adapted to be secured to a rear wall of the vehicle.
15. A vehicle seat as defined in claim 9, wherein said support structure is secured to one side of said opposite end of said seat cushion assembly, and wherein said cable assembly further comprises:
a second support structure secured to a side opposite to said one side of said opposite end of said seat cushion assembly;
a second cable moving member mounted on said second support structure and movable in two opposite directions to move said cable to release said lockable mounting assembly in response to movement thereof in either of said two directions; and a second manually movable member mounted on said second support structure and constructed and arranged to be manually moved to effectuate movement of said second cable moving member in either of said two directions to move said cable to release and lockable mounting assembly.
a second support structure secured to a side opposite to said one side of said opposite end of said seat cushion assembly;
a second cable moving member mounted on said second support structure and movable in two opposite directions to move said cable to release said lockable mounting assembly in response to movement thereof in either of said two directions; and a second manually movable member mounted on said second support structure and constructed and arranged to be manually moved to effectuate movement of said second cable moving member in either of said two directions to move said cable to release and lockable mounting assembly.
16. A vehicle seat comprising:
a first mounting assembly constructed and arranged to be mounted on a floor of the vehicle;
a seat cushion assembly carried by said first mounting assembly;
a seat back cushion assembly having a lower end adjacent the seat cushion assembly and an opposite end;
a second mounting assembly connected with said seat back cushion assembly and constructed and arranged to maintain said seat back cushion assembly in operative relation with respect to said seat cushion assembly;
one of said mounting assemblies including a releasable locking assembly releasable to permit movement of one of said mounting assemblies and the cushion assembly associated therewith between two releasably locked positions; and a manually operable cable assembly operable to release said releasable locking assembly to permit movement of the mounting assembly and associated cushion assembly between said two locked positions, said cable assembly including (i) a support structure;
(ii) a flexible cable connected at one end with said releasable locking assembly and being movable so that said one end thereof moves in one direction to release the releasable locking assembly;
(iii) a cable moving member mounted on said support structure and movable in two opposite directions, said moving member constructed and arranged to move said one end of said cable in said one direction to release said releasablelocking assembly in response to movement thereof in either of said two directions; and (iv) a manually movable member mounted on said support structure and constructed and arranged to be manually moved to effectuate movement of said cable moving member in either of said two directions to move said one end of said cable in said one direction to release said releasable locking assembly and thereby permit the mounting assembly and associated cushion assembly to be moved between said two locked positions.
a first mounting assembly constructed and arranged to be mounted on a floor of the vehicle;
a seat cushion assembly carried by said first mounting assembly;
a seat back cushion assembly having a lower end adjacent the seat cushion assembly and an opposite end;
a second mounting assembly connected with said seat back cushion assembly and constructed and arranged to maintain said seat back cushion assembly in operative relation with respect to said seat cushion assembly;
one of said mounting assemblies including a releasable locking assembly releasable to permit movement of one of said mounting assemblies and the cushion assembly associated therewith between two releasably locked positions; and a manually operable cable assembly operable to release said releasable locking assembly to permit movement of the mounting assembly and associated cushion assembly between said two locked positions, said cable assembly including (i) a support structure;
(ii) a flexible cable connected at one end with said releasable locking assembly and being movable so that said one end thereof moves in one direction to release the releasable locking assembly;
(iii) a cable moving member mounted on said support structure and movable in two opposite directions, said moving member constructed and arranged to move said one end of said cable in said one direction to release said releasablelocking assembly in response to movement thereof in either of said two directions; and (iv) a manually movable member mounted on said support structure and constructed and arranged to be manually moved to effectuate movement of said cable moving member in either of said two directions to move said one end of said cable in said one direction to release said releasable locking assembly and thereby permit the mounting assembly and associated cushion assembly to be moved between said two locked positions.
17. A vehicle seat as claimed in claim 16, wherein said first and second mounting assemblies are operatively connected with one another and comprise a releasably lockable mounting assembly constructed and arranged to be mounted on the floor of a vehicle and to be connected with said seat cushion and seat back cushion assemblies in a relationship which retains one end of said seat cushion assembly adjacent a lower end of said seat back cushion assembly while enabling said assemblies to be selectively releasably moved between said two releasably locked positions, said two releasably locked positions consisting of (1) a sitting position wherein said seat cushion assembly extends generally horizontally from said one end thereof to an opposite end thereof to support a user sitting thereon and said seat back cushion assembly extends upwardly from the lower end thereof to the upper opposite end thereof to support the back of a user sitting on said seat cushion assembly and (2) a storage position wherein said seat back cushion assembly and said seat cushion assembly extend generally vertically in adjacent relation alongside one another.
18. A vehicle seat as claimed in claim 17, wherein said cable assembly is operable remote from said releasably lockable mounting assembly to release said releasably lockable mounting assembly to permit movement thereof between said sitting and storage positions.
19. A vehicle seat as claimed in claim 18, wherein said cable moving member comprises a movable structure pivotally mounted on said support structure for movement in said two opposite directions, said movable structure including a cable engaging portion and being pivotally movable in said two opposite directions to enable said engaging portion to engage said cable to thereby move said cable to release said lockable mounting assembly.
20. A vehicle seat according to claim 19, wherein said flexible cable is connected with said lockable mounting assembly and said movable structure of said cable moving member is constructed and arranged so that said engaging portion thereof moves into tensioning engagement with a portion of said cable between said ends to thereby move said cable to release said lockable mounting assembly.
21. A vehicle seat as defined in claim 17, wherein said support structure is secured to one side of said opposite end of said seat cushion assembly, and wherein said cable assembly further comprises:
a second support structure secured to a side opposite to said one side of said opposite end of said seat cushion assembly;
a second cable moving member mounted on said second support structure and movable in two opposite directions to move said cable to release said lockable mounting assembly in response to movement thereof in either of said two directions; and a second manually movable member mounted on said second support structure and constructed and arranged to be manually moved to effectuate movement of said second cable moving member in either of said two directions to move said cable to release said lockable mounting assembly.
a second support structure secured to a side opposite to said one side of said opposite end of said seat cushion assembly;
a second cable moving member mounted on said second support structure and movable in two opposite directions to move said cable to release said lockable mounting assembly in response to movement thereof in either of said two directions; and a second manually movable member mounted on said second support structure and constructed and arranged to be manually moved to effectuate movement of said second cable moving member in either of said two directions to move said cable to release said lockable mounting assembly.
22. A vehicle seat as claimed in claim 16, wherein a second end of said cable is anchored to said support structure.
23. A vehicle seat as claimed in claim 16, wherein said first mounting is provided separately from said second mounting assembly, said second mounting assembly constructed and arranged to be mounted on the floor of the vehicle and connected with seat back cushion assembly so that seat back cushion assembly extends upwardly from the lower end thereof to the upper opposite end thereof to support the back of a user sitting on said seat cushion assembly;
said first mounting assembly including said releasable locking assembly releasable to permit movement of said first mounting assembly together with said seat cushion assembly between said two releasably locked positions consisting of (1) a sitting position wherein said seat cushion assembly extends generally horizontally from one end thereof to an opposite end thereof to support a user sitting thereon and (2) a storage position wherein said seat back cushion assembly and said seat cushion assembly extend generally vertically in adjacent relation alongside one another.
said first mounting assembly including said releasable locking assembly releasable to permit movement of said first mounting assembly together with said seat cushion assembly between said two releasably locked positions consisting of (1) a sitting position wherein said seat cushion assembly extends generally horizontally from one end thereof to an opposite end thereof to support a user sitting thereon and (2) a storage position wherein said seat back cushion assembly and said seat cushion assembly extend generally vertically in adjacent relation alongside one another.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002080282A CA2080282C (en) | 1992-10-09 | 1992-10-09 | Seat hinge and latch assembly with bi-directional release |
| US08/368,818 US5498052A (en) | 1992-10-09 | 1995-01-06 | Seat hinge and latch assembly with bi-directional release |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US95874892A | 1992-10-09 | 1992-10-09 | |
| CA002080282A CA2080282C (en) | 1992-10-09 | 1992-10-09 | Seat hinge and latch assembly with bi-directional release |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2080282A1 CA2080282A1 (en) | 1994-04-10 |
| CA2080282C true CA2080282C (en) | 1997-12-16 |
Family
ID=40848444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002080282A Expired - Fee Related CA2080282C (en) | 1992-10-09 | 1992-10-09 | Seat hinge and latch assembly with bi-directional release |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5498052A (en) |
| CA (1) | CA2080282C (en) |
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| KR100190849B1 (en) * | 1996-06-20 | 1999-06-01 | 윤종용 | Personal computer |
| US5918937A (en) * | 1997-06-23 | 1999-07-06 | Freedman Seating Co. | Folding seat |
| US6082805A (en) * | 1997-09-17 | 2000-07-04 | Atwood Mobile Products | Multi-purpose recreational vehicle seat having storage compartment access |
| US6155640A (en) * | 1997-12-12 | 2000-12-05 | Magna Interior Systems Inc. | Bench seat having track assembly with bi-directional release |
| US6179362B1 (en) | 1998-08-26 | 2001-01-30 | Johnson Controls Technology Company | Vehicle utility seat |
| DE10019854C5 (en) * | 2000-04-20 | 2004-06-03 | Keiper Gmbh & Co. Kg | Manual lever drive for adjusting devices on seats, in particular on motor vehicle seats |
| GB2372438C (en) * | 2001-02-23 | 2009-06-15 | Johnson Controls Tech Co | Improvements in or relating to vehicle seating |
| US6651274B2 (en) | 2001-10-01 | 2003-11-25 | Flair Interiors, Inc. | Multi-purpose seat/bed having automatic lock/unlock capability |
| US6695378B2 (en) | 2002-04-22 | 2004-02-24 | Corbin Pacific, Inc. | Vehicle seat with movable backrest |
| CA2454590C (en) * | 2003-01-06 | 2007-07-03 | Faurecia Automotive Seating Canada Limited | Stowable rear seat for vehicle passenger compartments |
| US7377584B2 (en) * | 2003-07-28 | 2008-05-27 | Johnson Controls Technology Company | Articulating high latch for a seat |
| US7490906B2 (en) * | 2004-05-27 | 2009-02-17 | Airbus Deutschland Gmbh | Seat backrest for the crew rest compartment of an aircraft |
| US7393056B2 (en) * | 2005-05-11 | 2008-07-01 | Lear Corporation | Vehicle seat release assembly |
| FR2885850B1 (en) * | 2005-05-18 | 2007-07-20 | Faurecia Sieges Automobile | ARRANGEMENT OF A SEAT FOR A MOTOR VEHICLE TO LIMIT ITS LONGITUDINAL SIZE |
| US7270371B2 (en) * | 2005-10-27 | 2007-09-18 | Lear Corporation | Truck slouch seat |
| US7517008B2 (en) * | 2006-02-07 | 2009-04-14 | Toyota Motor Engineering & Manufacturing North America, Inc. | Remote release seat cushion lock with one hand operation |
| FR2905314B1 (en) * | 2006-09-01 | 2008-12-05 | Dorel France Sa Sa | CHILD CAR SEAT BETWEEN AN OPERATING POSITION AND AT LEAST ONE INSTALLATION POSITION, WITH DOUBLE LOCKING HOOK. |
| FR2905315B1 (en) * | 2006-09-01 | 2008-12-05 | Dorel France Sa Sa | CHILD CAR SEAT BETWEEN AN OPERATING POSITION AND AT LEAST ONE INSTALLATION POSITION |
| US9308836B2 (en) * | 2006-10-26 | 2016-04-12 | Ford Global Technologies, Llc | Folding and reclining seat for vehicle |
| US8303018B2 (en) * | 2007-01-04 | 2012-11-06 | Johnson Control Technology Company | Dynamic hook insert for a movable seat back |
| US7568764B2 (en) * | 2007-01-08 | 2009-08-04 | Ford Global Technologies, Llc | Reclining rear seat for vehicle having four-bar link |
| US7712830B2 (en) * | 2007-06-20 | 2010-05-11 | Cosco Management, Inc. | Child restraint with swiveling juvenile seat and seat-back lock |
| US7731284B2 (en) * | 2007-07-31 | 2010-06-08 | Cosco Management, Inc. | Child restraint with swiveling juvenile seat having a seat-anchor guide channel |
| US7611200B2 (en) * | 2008-03-13 | 2009-11-03 | Nissan Technical Center North America, Inc. | Adjustable seat for use in a vehicle |
| US20100283300A1 (en) * | 2009-05-06 | 2010-11-11 | Gryp Dennis J | Vehicle seat apparatus |
| US8226147B2 (en) * | 2010-01-21 | 2012-07-24 | Bae Industries, Inc. | Linear latch with spring biased and opposite teethed gear rack for use with an upper rear pivoting seat back |
| FR2979296B1 (en) * | 2011-08-22 | 2014-01-24 | Peugeot Citroen Automobiles Sa | RETRACTABLE SEAT POSSIBLE TO BE LATCHED IN THE ESCAMOTED POSITION. |
| US9060610B2 (en) | 2011-11-11 | 2015-06-23 | Flexsteel Industries, Inc. | Spring back hinge with or without spring lock mechanism |
| CN104085336B (en) * | 2014-07-14 | 2016-08-17 | 上海延锋江森座椅有限公司 | A kind of detachable plastic support skeleton being applied to back seat avris |
| DE102014116064B4 (en) * | 2014-11-04 | 2018-09-06 | Grammer Aktiengesellschaft | folding seat |
| JP2016222139A (en) * | 2015-06-01 | 2016-12-28 | トヨタ紡織株式会社 | Vehicle seat |
| US9770112B2 (en) * | 2015-06-26 | 2017-09-26 | Yao-Chuan Wu | Chair and furniture set with the chair |
| US9616778B1 (en) * | 2015-11-30 | 2017-04-11 | Nissan North America, Inc. | Vehicle seat structure |
| JP7103166B2 (en) * | 2018-11-02 | 2022-07-20 | トヨタ自動車株式会社 | Vehicle seat |
| US11510495B1 (en) * | 2021-05-14 | 2022-11-29 | Steelcase Inc. | Chair having an accessory hook |
| US11718208B2 (en) * | 2021-09-10 | 2023-08-08 | Honda Motor Co., Ltd. | Vehicle seat mounting bracket for energy attenuating member |
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| US3059964A (en) * | 1960-08-26 | 1962-10-23 | Ford Motor Co | Stowable jump seat |
| US3522970A (en) * | 1968-06-21 | 1970-08-04 | Ltv Aerospace Corp | Latch mechanism for folding seat |
| US4266822A (en) * | 1978-11-15 | 1981-05-12 | American Seating Company | Foldable transportation seat |
| US4527828A (en) * | 1983-08-08 | 1985-07-09 | General Motors Corporation | Side mounted jump seat for an automotive vehicle |
| JPH0355457Y2 (en) * | 1986-06-18 | 1991-12-10 | ||
| US4771507A (en) * | 1987-05-01 | 1988-09-20 | Chrysler Motors Corporation | Auxiliary folding seat hinge arrangement |
| US4955973A (en) * | 1989-04-20 | 1990-09-11 | Provencher Roland L | Convertible bench seat for vans |
-
1992
- 1992-10-09 CA CA002080282A patent/CA2080282C/en not_active Expired - Fee Related
-
1995
- 1995-01-06 US US08/368,818 patent/US5498052A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2080282A1 (en) | 1994-04-10 |
| US5498052A (en) | 1996-03-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |